Operator Cart over Bitrix24

• What it is: Single-page app for call-center/CRM operators — category picker, product search, cart assembly, modifiers, recommended products, total. Works on top of Bitrix24 (fields ID, NAME, UF_QUANTITY — Bitrix24 userfields). Data is pulled from an external API.
• Type / status / role: web-app (internal tool) / maintained / solo (44 of 45 commits — the user; 1 — root deploy).
• Active period: 2021-10-10 → 2025-12-19. Old history (2021) is legacy; the current product is the December (2025) rewrite 5217b80 Modernize CRM Cart: Next.js 16, TypeScript, shadcn/ui.

• Languages: TypeScript (strict).
• Frameworks/libraries: Next.js 16 (App Router, Turbopack), React 19, TanStack Query v5, @tanstack/react-virtual (list virtualization), Zustand v5 (cart/UI store), shadcn/ui (Radix), Tailwind 3, axios, currency.js (money), latin-to-cyrillic + convert-layout (transliteration/layout for search), lucide-react.
• Infra/deploy: PM2 (ecosystem.config.js, port 8082, nvm node 20, cwd /home/davr/chopar/crm_cart), choparpizza.uz server. Bun + yarn (both lockfiles).
• Data: external REST API; backend — Bitrix24 CRM.
• Notable tooling: shadcn/ui (components.json).

Old messages are junk ("asd", "dsad", "sss"); the December rewrite — clean ones.

• Modernization on Next 16 + shadcn/ui (5217b80) — full rewrite of the legacy version.
• Search with transliteration and layout conversion (3bf9ee1 translit, see hooks/use-products.ts).
• Virtualized product list (components/products/product-list.tsx).
• Cart with modifiers (5af701a ability to remove modifier, c3c454e stock, 6a0d6aa fix of stop text).
• Recommended products (bfc5359 related products).
• PM2/deploy fix (4 commits: node v20.19.0 path, cwd, launching next via node).
• Volume: 45 commits, ~44 by the user. Activity in short bursts; the major burst — the December 2025 rewrite.

• Product list virtualization (product-list.tsx, @tanstack/react-virtual): useVirtualizer({ count, estimateSize: () => 44, overscan: 8 }) with absolute row positioning inside a 520px scroll container. → performant rendering of a large catalog without lag; understanding of virtualization.
• Smart search with transliteration and layout switching (hooks/use-products.ts): convert-layout/ru + latin-to-cyrillic — product.NAME.includes(translit(lowerSearch)), so the operator finds a product even when typing in Latin script or in the wrong keyboard layout (a common pain point for RU/UZ input). → considered UX for the domain locale.
• Optimistic cart updates (stores/cart-store.ts, Zustand): optimisticIncrement/Decrement/Remove + isUpdating flag — instant UI response before the server confirms (decrement with guard UF_QUANTITY > 1). → optimistic UI pattern over a CRM backend.
• Monetary calculations via currency.js (no float artifacts).
• Integration with Bitrix24 (UF_* userfields) — adapting the UI store to the CRM schema.

• Sessions found: 0 for the exact path. Locally there is a .claude/ (settings) — the project was likely developed with Claude Code, but sessions are not saved in the user profile (or were deleted / are on another machine).
• What was done with AI: indirectly — the December rewrite on Next 16/shadcn with clean commit messages looks AI-assisted, but there are no direct sessions.
• Without session data — no inferences about the AI workflow.

• Solo tool, rewritten on a modern stack (Next 16 / React 19 / TanStack / Zustand / shadcn).
• 3 specific engineering techniques in a small volume: virtualization, transliterated search, optimistic UI.
• Real production use (PM2, Bitrix24 CRM of the Restaurant chain (UZ) chain).
• Modest scale (single-page tool, ~5 component groups).